METHOD AND COMPOUND FOR MANUFACTURE OF HEAT-AND SOUND-PROOF WOOD-COMPOSITE MATERIALS Russian patent published in 2001 - IPC

FIELD: manufacture of composite mixes prepared from ground vegetable raw material, mainly from wood waste, mineral binders, applicable for manufacture of heat-and sound-proof wood-composite materials by moulding of raw material mixes. SUBSTANCE: ground filler of vegetable origin is dried up in a drier for stabilization (averaging) of the content of the water phase and fed to a reactor-mixer for production of moulding material. The slime of production of metallic magnesium from the stage of dewatering in the form of ingots is ground with subsequent milling to a dispersity of 50-150 μm, the content of active components (MgCl₂ and MgO) is determined, and used as a magnesium-containing binder. The filler of vegetable origin in the reactor-mixer is mixed first with the rated amount of water, and then the rated amount of mineral binder is introduced (100-120% of the mass of the absolutely dry filler) providing for ratio MgCl₂:MgO:H₂O = 1:1.26 -1.38:1.14-2.65. The obtained moulding material is moulded and subjected to hot runner moulding in an extruding press at a pressure of 30 to 40 atm. The ingredients of the moulding material are present in the compound at the following ratio, in terms of the absolutely dry filler, mass number: ground filler of vegetable origin, 100; waste of production of metallic magnesium by the electrolytic method in the form of ground dry slime, 100-120; water, 50-56. EFFECT: improved ecology due to the use, improved basic properties of finished articles and reduced power consumption for their production. 3 cl, 1 tbl, 3 ex